Viability and gene transcription of Campylobacter jejuni in infant milk formulas
This study simulated the contamination of two varieties of infant milk formulas (homemade and commercial) with 103 and 104 CFU/mL of Campylobacter jejuni, that were kept under refrigeration (4-7ºC) for up to 48 hours. The aim of this study was to verify the maintenance of the viability and ability...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Federal de Uberlândia
2019-07-01
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| Series: | Bioscience Journal |
| Subjects: | |
| Online Access: | https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/41901 |
| _version_ | 1818445649978327040 |
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| author | Roberta Torres de Melo Carla Ribeiro Pacheco Guilherme Paz Monteiro Yara Cristina Paiva Maia Eliane Pereira Mendonça Raquelline Figueiredo Braz Edson Campos Valadares Júnior Daise Aparecida Rossi |
| author_facet | Roberta Torres de Melo Carla Ribeiro Pacheco Guilherme Paz Monteiro Yara Cristina Paiva Maia Eliane Pereira Mendonça Raquelline Figueiredo Braz Edson Campos Valadares Júnior Daise Aparecida Rossi |
| author_sort | Roberta Torres de Melo |
| collection | DOAJ |
| description |
This study simulated the contamination of two varieties of infant milk formulas (homemade and commercial) with 103 and 104 CFU/mL of Campylobacter jejuni, that were kept under refrigeration (4-7ºC) for up to 48 hours. The aim of this study was to verify the maintenance of the viability and ability of Campylobacter jejuni to produce transcripts of virulence and resistance to stress conditions during periods of 0 (after preparation), 24 and 48 hours. C. jejuni remained viable during all analyzed stages and the presence of coliforms was not detected. In general, the counts reduced 1 log cycle after 48 hours for all samples, except the 104 CFU/mL inoculum of commercial formula, which reduced 2 log cycles, indicating greater injury of C. jejuni in this food matrix. C. jejuni showed to be more adapted to homemade matrix, due to high transcription of the gene related to cell invasion, ciaB, and more susceptible in the commercial matrix, due to the high transcription of genes related to conditions of stress tolerance (dnaJ, p19, sodB). The low infective dose of C. jejuni coupled with greater vulnerability of children less than five years indicate the need for care in the preparation and maintenance of infant formulas, to prevent the use of contaminated raw material and cross-contamination, especially in homemade formulations.
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| first_indexed | 2024-12-14T19:35:12Z |
| format | Article |
| id | doaj.art-7e3ab403b1f347eaa7c022588b260780 |
| institution | Directory Open Access Journal |
| issn | 1981-3163 |
| language | English |
| last_indexed | 2024-12-14T19:35:12Z |
| publishDate | 2019-07-01 |
| publisher | Universidade Federal de Uberlândia |
| record_format | Article |
| series | Bioscience Journal |
| spelling | doaj.art-7e3ab403b1f347eaa7c022588b2607802022-12-21T22:49:54ZengUniversidade Federal de UberlândiaBioscience Journal1981-31632019-07-01355Viability and gene transcription of Campylobacter jejuni in infant milk formulasRoberta Torres de Melo0Carla Ribeiro Pacheco1Guilherme Paz Monteiro2Yara Cristina Paiva Maia3Eliane Pereira Mendonça4Raquelline Figueiredo BrazEdson Campos Valadares Júnior5Daise Aparecida Rossi6Universidade Federal de Uberlândia, UniubeUniversidade Federal de UberlândiaUniversidade Federal de UberlândiaUniversidade Federal de UberlândiaUniversidade Federal de UberlândiaUniversidade Federal de UberlândiaUniversidade Federal de Uberlândia This study simulated the contamination of two varieties of infant milk formulas (homemade and commercial) with 103 and 104 CFU/mL of Campylobacter jejuni, that were kept under refrigeration (4-7ºC) for up to 48 hours. The aim of this study was to verify the maintenance of the viability and ability of Campylobacter jejuni to produce transcripts of virulence and resistance to stress conditions during periods of 0 (after preparation), 24 and 48 hours. C. jejuni remained viable during all analyzed stages and the presence of coliforms was not detected. In general, the counts reduced 1 log cycle after 48 hours for all samples, except the 104 CFU/mL inoculum of commercial formula, which reduced 2 log cycles, indicating greater injury of C. jejuni in this food matrix. C. jejuni showed to be more adapted to homemade matrix, due to high transcription of the gene related to cell invasion, ciaB, and more susceptible in the commercial matrix, due to the high transcription of genes related to conditions of stress tolerance (dnaJ, p19, sodB). The low infective dose of C. jejuni coupled with greater vulnerability of children less than five years indicate the need for care in the preparation and maintenance of infant formulas, to prevent the use of contaminated raw material and cross-contamination, especially in homemade formulations. https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/41901CampylobacteriosisInfantsGastroenteritis. |
| spellingShingle | Roberta Torres de Melo Carla Ribeiro Pacheco Guilherme Paz Monteiro Yara Cristina Paiva Maia Eliane Pereira Mendonça Raquelline Figueiredo Braz Edson Campos Valadares Júnior Daise Aparecida Rossi Viability and gene transcription of Campylobacter jejuni in infant milk formulas Bioscience Journal Campylobacteriosis Infants Gastroenteritis. |
| title | Viability and gene transcription of Campylobacter jejuni in infant milk formulas |
| title_full | Viability and gene transcription of Campylobacter jejuni in infant milk formulas |
| title_fullStr | Viability and gene transcription of Campylobacter jejuni in infant milk formulas |
| title_full_unstemmed | Viability and gene transcription of Campylobacter jejuni in infant milk formulas |
| title_short | Viability and gene transcription of Campylobacter jejuni in infant milk formulas |
| title_sort | viability and gene transcription of campylobacter jejuni in infant milk formulas |
| topic | Campylobacteriosis Infants Gastroenteritis. |
| url | https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/41901 |
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